Materials Today Sustainability最新文献

{"title":"Development of bio-based flexible polyurethane foams incorporating phase change materials for thermal energy storage applications","authors":"Damiano Rossi ,&nbsp;Irene Anguillesi ,&nbsp;Emanuele Maccaferri ,&nbsp;Alekos Ioannis Garivalis ,&nbsp;Ester D'Accardi ,&nbsp;Davide Palumbo ,&nbsp;Maria Michela Dell'Anna ,&nbsp;Daniele Testi ,&nbsp;Loris Giorgini ,&nbsp;Maurizia Seggiani","doi":"10.1016/j.mtsust.2025.101234","DOIUrl":"10.1016/j.mtsust.2025.101234","url":null,"abstract":"<div><div>The fabrication of innovative polyurethane panels for energy efficiency is increasingly important and should ideally be based on sustainable, non-fossil-based feedstock. In this context, the present work reports the development of sustainable composite panels by incorporating microencapsulated phase change materials (PCMs) into flexible polyurethane (PU) foams, synthesized from a polyol derived from waste cooking oil (WCO) and a partially bio-based isocyanate. The PU-PCM panels achieved energy storage capacity up to 26.2 J/g at a maximum PCM content of 15 phr. Uniform PCM dispersion slightly reduced cell size and increased panel density (from 128 to 157 kg/m³), thereby enhancing structural support and rigidity while reducing elasticity (compression force deflection up to 234.8 kPa). Fatigue tests confirmed resistance to cyclic loading, with increased dynamic stress and stiffness due to PCM integration. Differential scanning calorimetry showed minimal enthalpy hysteresis (±0.26 J/g) and a stable phase-change temperature (36 ± 0.1 °C), demonstrating resilience to thermal and mechanical stress. Thermal conductivity increased slightly (from 46.15 to 48.44 mW/m·K at 20 °C) due to the silica-based PCM shell, while thermal diffusivity decreased, favouring transient thermal regulation. Fire performance remained unaffected, likely due to the balance between the flammable paraffinic core and the flame-retardant silica shell of PCMs. Overall, bio-based PU-PCM panels show potential for transportation and construction applications owing to their lightweight, insulating, and flame-retardant properties. They offer improved sustainability and thermal-mechanical performance compared to conventional PU panels and flammable PCMs, while supporting circular economy principles by valorising end-of-life WCO.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101234"},"PeriodicalIF":7.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145267667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flexible and lead-free halide perovskite ReRAM: Toward sustainable and adaptive memory devices","authors":"Geon Kim ,&nbsp;Hyojung Kim","doi":"10.1016/j.mtsust.2025.101239","DOIUrl":"10.1016/j.mtsust.2025.101239","url":null,"abstract":"<div><div>Halide perovskite-based resistive random-access memory (ReRAM), a next-generation non-volatile memory option, has attracted a lot of attention due to the search for environmentally friendly and adaptive electronics. Recent developments in flexible ReRAM and in lead-free halide perovskite-based memory devices are compiled in this paper, with an emphasis on electrical performance, switching mechanisms, stability-enhancing techniques, and structural design. Halide perovskites' natural advantages-such as their low working voltage, fast switching speed, and solution processability-make them attractive for incorporation into flexible platforms including neuromorphic computers, wearable electronics, and implanted devices. These devices exhibit fast switching, low operating voltages (&lt;1 V), and high ON/OFF ratios (&gt;10⁶), making them promising for low-power applications. The operating voltages of devices that use MAPbI₃ and CsPbBr₃ are less than 1 V, and their ON/OFF ratios are greater than 10⁶. Performance deterioration brought on by mechanical deformation and exposure to the environment is still a major problem, though. Mechanical resilience and long-term retention have been improved through composite structures, interface engineering, and encapsulation strategies. There have been significant efforts to create lead-free substitutes in order to address environmental concerns regarding lead-based compounds. Even though compounds like Cs₃Bi₂I₉, Cs₂SnI₆, and Cs₂AgBiBr₆ are less toxic and more chemically stable, issues like oxidation, decreased mobility, and variability still exist. Strategies such as dimensional tuning and passivation are being explored to overcome these limitations.</div><div>However, integration scalability, switching uniformity, and environmental stability remain key challenges for future research. Halide Perovskite-based ReRAM is positioned as a viable candidate for adaptable, ecologically friendly memory applications that meet the demands of modern electronics thanks to ongoing material innovation and system-level optimization.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101239"},"PeriodicalIF":7.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145267812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic utilization of recycle cement powder and glass powder to prepare low-carbon and environmentally friendly mortar: Mechanical properties, microstructure, and environmental assessment","authors":"Hongyu Tao ,&nbsp;Jiyao Tang ,&nbsp;Chenjin Zhang ,&nbsp;Changshun Zhou ,&nbsp;Wenqiang Zhai","doi":"10.1016/j.mtsust.2025.101228","DOIUrl":"10.1016/j.mtsust.2025.101228","url":null,"abstract":"<div><div>The discarded cement pastes and glass generated as by-products during the process of building demolition. The open accumulation of waste cement pastes and glass causes resource wastage and environmental pollution, which urgently needs resource utilization. In this study, composite supplementary cementitious materials (RCG), which are formulated by mixing recycled cement paste and glass powder, are utilized to partially substitute conventional cement in the preparation of environmentally friendly mortar. The influence of RCG content on the compressive strength, microstructure and nanomechanical properties of mortar is systematically studied. Additionally, the corresponding ecological benefit was assessed. The results indicate that incorporating an optimal proportion of RCG (10 %–20 %) enhances the mechanical properties of the mortar. Compared with the control specimen, the compressive strength of RCG20 specimen increased by 5.79 % at 28 days. However, the strength of specimens decreased with further increase of RCG content. The addition of 20 %RCG can effectively improve the compactness of mortar specimens, optimize the pore structure, and increase the C-S-H content, especially for high-density C-S-H. Compared with conventional mortar, RCG-containing mortar has lower CO₂ emission and cost. This study highlights the potential for resource recovery from construction waste, contributing to the sustainable development of cement-based materials.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101228"},"PeriodicalIF":7.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cu-doped nanocrystal carbon dots for integrated fabrication of ultrabright luminescent solar concentrators","authors":"Mahnoor Hassan ,&nbsp;Kassa Belay Ibrahim ,&nbsp;Jodi Gobbo ,&nbsp;Shujie You ,&nbsp;Enrico Ercolini ,&nbsp;Enrico Trave ,&nbsp;Margherita Zavelani-Rossi ,&nbsp;Edoardo Carraro ,&nbsp;Andrea Iudica ,&nbsp;Paolo Moras ,&nbsp;Mario Leopoldo Rivera-Salazar ,&nbsp;Stephanie Bruyere ,&nbsp;David Horwat ,&nbsp;Alberto Vomiero ,&nbsp;Elisa Moretti ,&nbsp;Tofik Ahmed Shifa","doi":"10.1016/j.mtsust.2025.101230","DOIUrl":"10.1016/j.mtsust.2025.101230","url":null,"abstract":"<div><div>Carbon dots (CDs) are promising fluorophores for optoelectronic devices. Yet, achieving CDs with high solid-state photoluminescence quantum yields (PLQYs) remains a significant challenge. The development of metal-doped carbon dots (CDs) to effectively modulate their electronic properties and surface chemical reactivities is still in its early stages. This work introduces copper-doping to CDs (Cu-CDs) luminescent material to modify the optoelectronic properties of CDs. The as-synthesized CDs show a Stokes shift of ≈0.67 eV and high PLQYs of 62 %. The Cu-CDs show the highest power conversion efficiency of 2.36 % compared to CDs (2.04 %) with a Stokes shift of 0.71 eV. These findings demonstrate the possibility of tuning optical properties into CDs via metal doping, obtaining eco-friendly, high-efficiency LSCs through scalable production techniques, paving the way to the lab-to-fab transition of this kind of device. Our results demonstrate that dual-emission Cu-CDs with strong solid-state fluorescence are promising candidates as luminophores in efficient photovoltaic devices.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101230"},"PeriodicalIF":7.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances in inorganic binary solar cells","authors":"Mohammad I. Hossain ,&nbsp;Abdulaziz A. Alaswad ,&nbsp;Fahhad H. Alharbi","doi":"10.1016/j.mtsust.2025.101238","DOIUrl":"10.1016/j.mtsust.2025.101238","url":null,"abstract":"<div><div>The solar cell industry has long been dominated by various silicon technologies, along with a limited range of thin-film options such as cadmium telluride, copper–indium–gallium selenide (CIGS), and a few III-V materials. This trend is also reflected in the current research landscape. The successful development of high-efficiency solar cells using alternative materials could significantly enhance industry and help bridge the competitiveness gap with other energy sources. In this review, we explore recent advancements in solar cells that utilize inorganic binary materials, focusing primarily on single <span><math><mi>p</mi></math></span>-<span><math><mi>n</mi></math></span> junction designs. We highlight twenty-three alternative semiconductor materials, emphasizing their maximum efficiencies and the key challenges encountered in their applications.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101238"},"PeriodicalIF":7.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing melting of nanoparticle-enriched phase change materials in thermal energy storage systems","authors":"Mohib Hussain ,&nbsp;Faten Labassi ,&nbsp;Hassan Waqas ,&nbsp;Syed Muhammad Raza Shah Naqvi ,&nbsp;Meraj Ali Khan","doi":"10.1016/j.mtsust.2025.101243","DOIUrl":"10.1016/j.mtsust.2025.101243","url":null,"abstract":"<div><div>The enhancement of melting performance in phase change materials (PCMs) has become a critical challenge in the development of advanced thermal energy storage systems (TESS). Efficient melting and solidification are essential for maximizing energy utilization, yet conventional PCMs often suffer from low thermal conductivity, which restricts their heat transfer rates. To overcome this limitation, structural and material modifications are widely explored. Among these, the integration of fins within storage systems has proven highly effective. In particular, T-shaped fins are advantageous because their extended surface area significantly improves heat distribution during the melting process. In addition to structural modifications, the incorporation of nanoparticles into PCMs has emerged as a practical strategy to enhance thermal conductivity. By embedding high-conductivity nanoparticles into the base PCM, the overall energy absorption, conservation, and storage capabilities are improved. This investigation examines the combined effect of fin geometry and nanoparticle addition on the melting behavior in a horizontal shell-and-tube storage system. Specifically, PCMs integrated with nanoparticles are analyzed using T-shaped and V-shaped fins, and their performance is compared with that of eight longitudinal fins at an equal fin volume fraction. Both experimental and numerical validations are conducted to confirm accuracy. Results indicate that T-shaped fins coupled with nano-enhanced PCMs accelerate melting, reduce overall melting time, and improve uniformity, independent of heat transfer fluid (HTF) temperature.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101243"},"PeriodicalIF":7.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High entropy alloy reinforced lightweight metal matrix composites: A review of the fundamentals, fabrication, properties, and prospects","authors":"Smith Salifu,&nbsp;Peter Apata Olubambi","doi":"10.1016/j.mtsust.2025.101216","DOIUrl":"10.1016/j.mtsust.2025.101216","url":null,"abstract":"<div><div>High Entropy Alloy (HEA) reinforcements represent a transformative approach in advancing lightweight metal matrix composites (LMMCs) for high-performance structural applications. This review examines the integration of HEAs into lightweight metals such as aluminium, magnesium, and titanium matrices and highlights their potential to overcome the limitations associated with traditional ceramic reinforcements. The manuscript covers the fundamentals of LMMCs and HEAs, and particular attention is paid to microstructural evolution, interfacial bonding, and strengthening mechanisms such as load transfer, Orowan looping, and grain refinement. Furthermore, the review discusses the properties imparted by HEAs and emphasises their role in enhancing ductility, hardness, wear resistance and tensile strength of the reinforced composites. Challenges related to particle dispersion, interfacial reactions, and scalability are also explored. By consolidating recent advancements and identifying future research directions, this review shows the promise of HEA-reinforced LMMCs in enabling next-generation materials for aerospace, automotive, marine, and energy applications.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101216"},"PeriodicalIF":7.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145020740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of cashew nut shell liquid as a green oilfield chemical: A state-of-the-art review","authors":"Ashokkumar Veeramanoharan ,&nbsp;Seok-Chan Kim ,&nbsp;Giseong Lee","doi":"10.1016/j.mtsust.2025.101268","DOIUrl":"10.1016/j.mtsust.2025.101268","url":null,"abstract":"<div><div>The oilfield industry faces significant challenges, such as high raw material costs and negative environmental impacts due to the widespread use of synthetic oilfield chemicals sourced from petrochemicals. The reliance on environmentally hazardous synthetic oilfield chemicals contributes to severe global issues, including carbon emissions, global warming, and climate change, posing potential threats. Therefore, ongoing research is increasingly directed toward the development of oilfield chemicals derived from natural sources, particularly plant-based extracts—an approach commonly known as \"green oilfield chemicals.\" Among these, cashew nut shell liquid (CNSL), a key plant-derived material and low-cost byproduct of the cashew industry, has emerged as a promising and economically viable alternative to conventional feedstocks. So far, numerous chemicals and value-added products have been generated from CNSL, establishing its applications across various industries. This review provides a comprehensive overview of recent advancements in CNSL-based oilfield applications, including fuel, crude oil-water emulsions, emulsifiers and demulsifiers, flow improvers for waxy crude oil, corrosion inhibitors, lubricants, enhanced oil recovery (EOR), surfactants and foaming agents, with an emphasis on chemical structure–function relationships. We further present a comparative life-cycle assessment (LCA) of CNSL-based versus conventional oilfield chemicals, highlighting their potential environmental and sustainability benefits. Finally, we discuss market trends in green energy, technological opportunities, challenges, and future research directions aimed at improving reproducibility, scalability, and industrial adoption of CNSL-based additives. By integrating chemical, environmental, and economic perspectives, this review offers a forward-looking roadmap for the advancement of bio-based materials in the oilfield industry.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101268"},"PeriodicalIF":7.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145620046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"3D printing piezoelectric materials: Innovations, challenges, and future perspectives","authors":"Guanyi Gong ,&nbsp;Yue You ,&nbsp;Huajun Shen ,&nbsp;Milad Laghaei ,&nbsp;Yichao Wang ,&nbsp;Yongxiang Li","doi":"10.1016/j.mtsust.2025.101257","DOIUrl":"10.1016/j.mtsust.2025.101257","url":null,"abstract":"<div><div>Additive manufacturing (AM) is becoming an important route for creating piezoelectric materials and devices with application-driven geometries, spatially programmed functionality, and compatibility with flexible or wearable platforms. Recent progress has extended AM from simple polymer sensors to ceramic, polymer, and ceramic–polymer composite systems based on jetting, liquid resin–based printing (SLA, DLP, CLIP), extrusion or direct ink writing (DIW), powder-based processes, and emerging multi-material platforms. A central viewpoint of this review is that the electromechanical performance of 3D printed piezoelectrics depends on both the intrinsic material system (such as PZT, BTO, KNN, PVDF and PVDF-TrFE) and the way AM process parameters shape the microstructure through ink or feedstock formulation, printable feature size, curing or sintering depth, layer adhesion, and poling conditions. By organising the literature along this process–structure–property chain, different AM process can be compared on the same basis. Liquid resin–based and DIW methods at present provide the most practical balance between tens-of-micrometres resolution, shape fidelity, and compatibility with ceramic-filled or PVDF-based inks. Jetting and aerosol-jet printing are well suited to patterned thin active layers but remain highly sensitive to ink formulation. Powder-based processes still need better densification control to reach high d₃₃ lead-free ceramics. AM-oriented structural designs, including multilayer stacks, porosity-graded or multiphase lattices, and compliant substrates, can improve sensitivity, durability, and energy harvesting efficiency by matching mechanical impedance and promoting dipole alignment. Remaining challenges include printable high solid loading lead-free systems, stable dispersion and interfacial adhesion at low temperatures, predictive models that link print paths to poling response, and the absence of standardized benchmarking across AM platforms. The integration of data-driven optimization and in situ monitoring with this AM process is identified as an effective way to shorten the ink-to-device iteration cycle and to deliver reproducible, application-specific 3D printed piezoelectric devices.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101257"},"PeriodicalIF":7.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145620079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microwave-assisted synthesis of Ni-doped carbon from bio-waste as a cost-effective electrocatalyst for effective and sustainable water electrolysis","authors":"Ranjan S. Shetti ,&nbsp;Sonali M. Shetti ,&nbsp;Madasu Sreenivasulu ,&nbsp;Khuloud A. Alibrahim ,&nbsp;Abdullah N. Alodhayb ,&nbsp;Nagaraj P. Shetti","doi":"10.1016/j.mtsust.2025.101236","DOIUrl":"10.1016/j.mtsust.2025.101236","url":null,"abstract":"<div><div>The synthesis of cost-effective, easily synthesizable electrocatalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is crucial for advancement in sustainable hydrogen generation. The present study presents a facile synthesis of nickel-doped carbon (Ni@C) from bio-waste by microwave-assisted method as a highly efficient and sustainable electrocatalyst for the splitting of water. Physicochemical characterisation of the synthesised electrocatalyst confirms the effective incorporation of nickel in the carbon matrix, leading to the enhancement in electrocatalytically active sites. Evaluation of electrochemical parameters in 1 M KOH displays 280 mV and 180 mV overpotentials for OER and HER at 10 mA/cm². Full cell electrolysis demonstrates the promising and excellent electrocatalytic behaviour at a potential of 1.65 V. Prolonged stability tests showed excellent durability for 100 h. The synthesised Ni@C electrocatalyst from bio-waste offers an environmentally friendly, easily synthesizable and cost-effective alternative for the production of hydrogen by water electrolysis. Integrating solar energy systems with electrolysis enables high-scale and sustainable hydrogen generation, leading towards the transformation into renewable energy technologies.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101236"},"PeriodicalIF":7.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145267767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}